青衬忆笙
[qīng chèn yì shēng]
Green Echoes of Memories: Here '青' (qīng) can stand for youthfulness and freshness; '忆' means reminiscence, memory; and '笙' (shēng) is a traditional Chinese flute-like musical instrument, so this suggests remembering the sounds of a youthful period with music in mind.